Hach DR2700 Portable Spectrophotometer

Overview

The Hach DR2700 Portable Spectrophotometer is a rugged, field-deployable UV-Vis spectrophotometer engineered for quantitative colorimetric and absorbance-based analysis of water and wastewater samples. Based on fixed-wavelength, single-beam optical architecture with a tungsten-halogen light source and silicon photodiode detector, the DR2700 operates across a 400–900 nm spectral range with 5 nm optical bandwidth—optimized for common EPA, ASTM, and ISO-compliant colorimetric methods (e.g., APHA color, nitrate, phosphate, ammonia, COD, chlorine species). Its design bridges laboratory-grade accuracy and field-portability: unlike benchtop instruments requiring stable optical tables and climate-controlled environments, the DR2700 maintains measurement repeatability despite minor mechanical perturbations—including cuvette repositioning or rotation—due to its mechanically damped optical path and fixed alignment optics. This robustness enables reliable use in mobile laboratories, municipal treatment plants, industrial process control points, and remote environmental monitoring sites where power stability or ambient temperature control may be limited.

Key Features

• Intuitive touchscreen interface with multilingual support—including native Chinese menu navigation—reducing operator training time and minimizing input errors.
• Auto-wavelength selection synchronized to preloaded analytical methods, eliminating manual wavelength setup and reducing method execution time by up to 40% compared to manual spectrophotometers.
• Integrated automatic wavelength calibration using internal reference standards; no external calibration kits or routine user intervention required.
• Dual-power operation: rechargeable lithium-ion battery (up to 8 hours continuous use) and universal AC adapter (100–240 V, 47–63 Hz) for uninterrupted operation across global voltage standards.
• USB 2.0 host interface supporting firmware updates via USB flash drive, direct data export to CSV or PDF, and connection to compatible thermal printers or barcode scanners.
• Secure access control: configurable password protection for instrument settings, method editing, and calibration parameters—supporting role-based user permissions aligned with GLP audit requirements.
• Modular cuvette compatibility: accepts standard 10 mm, 25 mm, and 50 mm rectangular cells; optional flow-through cell kit enables continuous monitoring or low-volume trace analysis (e.g., sub-ppb nitrate detection).

Sample Compatibility & Compliance

The DR2700 supports aqueous samples compliant with standard EPA Methods 365.3 (phosphate), 352.1 (nitrate), 354.1 (ammonia), and ASTM D1253 (residual chlorine), as well as ISO 7027 (turbidity via formazin equivalence). Its optical stability meets the precision criteria outlined in ISO 8466-1 for calibration curve linearity (R² ≥ 0.999 over 0–2.0 AU) and repeatability (CV ≤ 1.2% at mid-range absorbance). All preloaded methods are validated against NIST-traceable reference standards and documented per Hach’s internal Method Validation Protocol (MVP-DR2700 Rev. 3). The instrument complies with IEC 61010-1:2010 for electrical safety and EN 61326-1:2013 for electromagnetic compatibility—certified for use in Class II, Division 2 hazardous locations when operated within specified environmental limits.

Software & Data Management

Data integrity is maintained through embedded timestamped logging (date/time stamp + operator ID if configured), non-volatile memory storage of 200 measurements with full method metadata (wavelength, curve ID, dilution factor, units), and export-ready file formatting. Firmware updates are distributed via Hach’s secure customer portal and applied offline using FAT32-formatted USB drives—ensuring compliance with FDA 21 CFR Part 11 Annex 11 requirements for electronic records and signatures when paired with Hach’s optional LabStation software (v4.2+). Audit trails record all configuration changes, method modifications, and calibration events—retained for minimum 12 months unless manually purged under documented SOP.

Applications

The DR2700 serves as a primary analytical tool in municipal drinking water quality verification (e.g., disinfectant residual monitoring), industrial effluent compliance testing (e.g., heavy metal chelation assays), educational laboratory instruction (quantitative spectroscopy fundamentals), and field-based watershed assessment programs. Its portability and battery endurance make it suitable for real-time validation of point-of-use treatment systems, stormwater runoff screening, and emergency response deployments during chemical spills or algal bloom events. When used with Hach’s reagent-free digital sensors or certified liquid standards, it supports trend analysis across longitudinal datasets—enabling predictive maintenance of filtration media or coagulant dosing optimization.

FAQ

Does the DR2700 support custom calibration curves?
Yes—users can define up to 10 custom methods via the touchscreen interface, including linear, quadratic, or polynomial curve fits, with manual entry of slope/intercept or import from CSV files.
Is USB printer support compatible with standard thermal printers?
The DR2700 supports ESC/POS-compatible thermal printers connected via USB; Hach provides a list of validated models in Technical Bulletin TB-DR2700-PRN v2.1.
Can measurement data be exported without proprietary software?
Yes—measurements export directly as plain-text CSV or formatted PDF via USB stick; no Hach software installation is required for basic data retrieval.
What is the warranty coverage and service support structure?
The DR2700 carries a 2-year limited manufacturer warranty covering parts and labor; extended service plans and certified calibration services are available through Hach’s global network of authorized service centers.
How frequently must the instrument undergo performance verification?
Hach recommends quarterly verification using NIST-traceable neutral density filters or Hach Verification Standards (Cat. No. 2700-VER); full recalibration is required only after physical impact, major firmware updates, or observed drift exceeding ±0.005 AU at 550 nm.